Rotary brush.



No. 639,666. Patented Dec; l9, I899.

A. T. CONDON & J. C. HAM. 'ROTARY BRUSH.

(Application filed Dec. 2, 1898.)

(No Model.)

UNITED STATES PATENT OFFICE.

ALVIN T. CONDON AND JOHN C. I-IAM, OF BELFAST, MAINE, ASSIGNORS TO THE CONDON MANUFACTURING COMPANY, OF SAME PLACE.

ROTARY BRUSH.

SPECIFICATION forming part of Letters Patent No. 639,666, dated December 19, 1899.

Application filed December 2, 1898. Serial No. 698,131. (No model.)

T 0 all whom it may concern.-

Be it known that we, ALVIN T. CONDON and JOHN C. HAM, citizens of the United States of America, and residents of Belfast, Waldo county, State of Maine, have invented certain new and useful Improvements in Rotary Brushes, of which the following is a specification.

Our invention relates to an improved cylinder or rotary brush such as is used in finishing boots and shoes; and the invention consists,essentially,in forming the brush with strips of flexible material, preferablynon-resilient in character, placed at intervals between the bristles.-

We illustrate our invention by means of the accompanying drawings, in which Figure 1 is an end elevation of the brush, partially formed and with a portion in section. Fig. 2 is a longitudinal section of the brush, and Fig. 3 is one of the bristle-sections shown in perspective.

The bristles B are suitably secured in the brush, and they have interposed between them at intervals strips of flexible material C, which may be of chamois-skin or other suitable material. The material used for this purpose should be comparatively thin and flexible, such as leather or cloth, and should have as little resiliency as possible. The strips C are preferably arranged parallel with the axis of rotation of the brush, but they may be otherwise disposed, as may be de- I sired.

As herein shown, the brush is made up of sections, each of which is composed of a flat bunch of bristles, to one side of which is secured the strip C. The bases of the bristles are cemented to a transverse strip of leatherboard, cardboard, or other suitable rigid material e, the ends d of which project beyond the sides of the section, and these ends'are reinforced by other thicknesses of similar material.

The strip C is cemented at its inner end to the base of the bristle-sections, and according to the construction herein shown the outer end does not extend to the ends of the bristles.

A two-part hub A constitutes the body of the brush, and in each half-section is an annular groove into which fit the projecting ends 01 of the bristle-sections. The two parts of the hub are fastened together by screws a, and they thus hold the bristle-sections firmly in place.

A brush constructed in this manneris much more durable than one composed wholly of bristles. The effect of the strips is to support the bristle-sections to prevent them from spreading and from bending down onto the hub when an excess of pressure is placed on them. The strips should be very flexible, so as to yield readily when the bristles are pressed back by the work, and with such strips the centrifugal force caused by the high revolution of the brush will cause them to resist sufficiently the bending of the bristles, and any resiliency in the strips will make them too stiff and not sufflciently yielding. The outer ends of the strips should be some distance back from the ends of the bristles, so that the latter will bend over the ends of the strips; otherwise the strips and not the bristles would do the work of the brush.

It will be understood that this invention applies not only to brushes made of bristles, but also to brushes made of hair or any like material, and the term bristles is to be understood as including such material.

We claim- 1. A cylinder-brush comprising a hub, radial bristle sections extending transversely to the plane of rotation of the brush and flexible strips interposed between the sections, said bristles extending beyond the outer ends of the strips, substantially as specified.

2. The herein described cylinder brush made up of a series of bristle-sections, the base of the bristles in each section being cemented to a transverse strip of rigid material having projecting ends, a strip of flexible material cemented to the bristles at the base thereof, in combination with a two-part grooved hub adapted to engage the said projecting ends.

Signed by us at Belfast, Maine, November ALVIN T. CONDON. JOHN C. HAM. Witnesses:

J. E. THOMB,

CLIFFORD J. PATTEE. 

